Results 61 to 70 of about 21,298 (215)

Increasing Vehicular Visible Light Communications Range Based on LED Current Overdriving and Variable Pulse Position Modulation: Concept and Experimental Validation

Sensors, 2023
Due to its unique advantages, the integration of Visible Light Communications (VLC) in vehicle safety applications has become a major research topic. Nevertheless, as this is an emergent technology, several challenges must be addressed.
Cătălin Beguni, Alin-Mihai Căilean, Sebastian-Andrei Avătămăniței, Alin-Dan Potorac, Eduard Zadobrischi, Mihai Dimian   +5 more
doaj   +1 more source

Non-Orthogonal Multiple Access for Hybrid VLC-RF Networks with Imperfect Channel State Information

, 2020
This paper proposes a general framework for the energy efficiency analysis of a hybrid visible light communication (VLC) and Radio Frequency (RF) wireless system, in which both VLC and RF subsystems utilize non-orthogonal multiple access (NOMA ...
Sofotasios, Paschalis, Al-Qutayri, Mahmoud, Elgala, Hany, Muhaidat, Sami, Hammadi, Ahmed Al, Mahmoud Al-Qutayri, Hany Elgala, Ahmed Al Hammadi, Paschalis C. Sofotasios, Sami Muhaidat   +9 more
core   +1 more source

Uso da reação em cadeia da polimerase na detecção da papilomatose bovina no Estado de Pernambuco

Medicina Veterinária, 2011
A papilomatose bovina é uma enfermidade complexa que representa entrave produtivo e econômico à pecuária mundial. O papilomavirus bovino tipo 2 (BPV-2) é um DNA vírus epiteliotrópico que, possivelmente, está associado a lesões benignas de pele e malignas
VLC Monteiro
doaj  

ISOLATION AND IDENTIFICATION OF FRIEDELAN-3-ONE FROM THE WILD PLANT RUMEX RECHINGERIANUS LOSINSK

Шәкәрім университетінің хабаршысы: Техника ғылымдар
The article presents the results of a study focused on the isolation and structural identification of the triterpenoid compound friedelan-3-one from the wild-growing plant Rumex rechingerianus Losinsk.The object of the study was the aboveground part of ...
G. A. Zhumakhanova, S. A. Ross, J. A. Aldana-Mejia   +2 more
doaj   +1 more source

Run to the Caves: Frog Refuges From Harsh Environments

Biotropica, Volume 58, Issue 6, November 2026.
ABSTRACT The use of caves by primarily nontroglobiont organisms can be critical when the conditions of surrounding epigean habitats deteriorate as a result of synergic effects of climate changes and degradation of native vegetation cover. Under scenarios of unbalanced temperatures, high solar incidence, low humidity and reduced shelter availability in ...
Rafael de Fraga, Cassia de Carvalho Teixeira, Valéria da Cunha Tavares, Xavier Prous, Gilmax Ferreira, Carlos Eduardo de Araújo Batista, Leonardo Carreira Trevelin   +6 more
wiley   +1 more source

Device Management and Data Transport in IoT Networks Based on Visible Light Communication

Sensors, 2018
LED-based Visible Light Communication (VLC) has been proposed as the IEEE 802.15.7 standard and is regarded as a new wireless access medium in the Internet-of-Things (IoT) environment.
Cheol-Min Kim, Seok-Joo Koh
doaj   +1 more source

A Monge–Ellipse Descriptor for Interpretable Quantification of Pore Architecture in Rock Images

Advanced Theory and Simulations, Volume 9, Issue 10, October 2026.
A Monge‐inspired geometric descriptor quantifies how neighboring pores are organized in segmented rock images. Each pore is represented by a second‐moment ellipse, and local pore triplets are evaluated through external homothetic centers. Applied to carbonate thin sections, the descriptor separates pore architectures that porosity alone cannot ...
Raphael M. Tromer, Israel da Silva Oliveira, Carlos Maciel de Oliveira Bastos, Alexandre Cavalheiro Dias, Paola Ferreira Barbosa, Lucieth Cruz Vieira, Roberto Ventura Santos, Luiz Antonio Ribeiro Junior   +7 more
wiley   +1 more source

Cognitive Successive Interference Cancellation for Multi-User Visible Light Communication Systems

Jurnal Elkomika
Wireless communication technology continues to face challenges in meeting high bandwidth demands and the capability to serve numerous users. One promising solution is the non-orthogonal multiple access (NOMA) scheme, particularly through the use of power
AMINAH INDAHSARI MARSUKI, BRIAN PAMUKTI
doaj   +1 more source

Isolated Cembranoid Diterpenes From Sarcophyton tenuispiculatum and Semi‑Synthetic Derivatives with Pro‑Apoptotic Activity in Breast Cancer Cells

Chemistry &Biodiversity, Volume 23, Issue 10, October 2026.
New arylated cembranoid derivatives from Sarcophyton tenuispiculatum show enhanced antiproliferative activity against breast cancer cells. Chlorobenzocembrin induces apoptosis through ROS accumulation and caspase‐6 activation, suggesting that epoxide ring opening and C7 aryl substitution are key structural features for strengthening anticancer ...
Samin Mousavi, Afsaneh Yegdaneh, Mahmoud Aghaei, Mustafa Ghanadian   +3 more
wiley   +1 more source

Sistema Smart Parking con VLC

, 2020
The article presents the proposal of an intelligent parking system “Smart Parking VLC” for large covered parking spaces, which uses VLC (Visible Light Communication) as a technique of information transmission and as an application of a friendly ...
Contreras Jaúregui, Diana, Pinto García , Ricardo, Lizarazo Medina, Pablo   +2 more
core   +2 more sources